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The end of the surveillance economy?

We are told that tracking is the price we pay for free content. Wen-jie Lu is coming to Bangkok to show that the maths says otherwise.

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Thrift Shop Security: Why you don't Need a Bank's Budget to Defend Your Network

I spent years negotiating security audits with global giants. The secret? You don't need to match their spend to match their security.

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From Snort to SOHO: Why the Blue Team Belongs to Everyone

I spent years building commercial security appliances. Here is why Shivani Bhardwaj’s return to FOSSASIA represents a shift in who owns network defense.

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Why We Invited a Space Engineer to Break Into Your ISP Router

The 'black box' in your hallway represents a fundamental power imbalance. Join us at FOSSASIA 2026 to learn how to tear down, audit, and repurpose ISP hardware.

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Becoming an amateur radio operator in Singapore

This guide is a companion to SARTS' Getting a 9V Ham License and includes additional information that I frequently share with potential new amateurs who approach me as one of SARTS' Elmers.

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Coming to terms with ARRL sponsoring cybercrime

A lot of people are up in arms about ARRL coughing up a $1M ransom to regain access to its data. There are several common objections, but they overlook any/all of: the business model of extortion, ARRL's avoided information security costs to date, how ARRL views itself, and/or how information security matures in the real world.

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SARTS participation in the IARU R3 2021 conference

From September 20 through 22 I attended (virtually) IARU Region 3's triennial conference. Only a few of the topics discussed were immediate concerns of Singapore amateurs, but as IMDA generally aligns its approach with that of administrations in neighbouring countries I'd suggest that it's very much in our interest that concerns of our neighbouring hams are successfully addressed.

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9V1RS yagi experiment

As planned, our new duplexer has made it possible for us to resume work on antenna configuration. We're particularly concerned about improving gain and therefore coverage to the east and realised that a short yagi might improve coverage for a large part of Singapore.

ROLANDTURNER.COM

9V1RS yagi experiment

As planned, our new duplexer has made it possible for us to resume work on antenna configuration. We're particularly concerned about improving gain and therefore coverage to the east and realised that a short yagi might improve coverage for a large part of Singapore.

ROLANDTURNER.COM

9V1RS transmit antenna test

Daniel 9V1ZV, Harish 9V1HP, and I installed the new duplexer (a Sinclair Q2330E) on Wednesday, however its TX insertion loss and VSWR seemed a little on the high side, so during installation we dropped power to 5W to avoid transmitter overheating problems. Today I visited again and with Harish reverted the antenna configuration to the two separate antennas that we've been using since the move after performing a simple empirical test of alternative configurations.